Weighted histogram in one variable Constructor: WeightedHistogram(|data|, |weights|, |bins|, |range|=None) Arguments: |data| -- a sequence of data points |weights| -- a sequence of weights, same length as |data| |bins| -- the number of bins into which the data is to be sorted |range| -- a tuple of two values, specifying the lower and the upper end of the interval spanned by the bins. Any data point outside this interval will be ignored. If no range is given, the smallest and largest data values are used to define the interval. In a weighted histogram, each point has a specific weight. If all weights are one, the result is equivalent to a standard histogram. The bin index and the number of points in a bin can be obtained by indexing the histogram with the bin number. Application of len() yields the number of bins. A histogram thus behaves like a sequence of bin index - bin count pairs.
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